​Suppose the Sales S (In Billions of Dollars Per Year)for

Multiple Choice

​Suppose the sales S (in billions of dollars per year) for Proctor & Gamble for the years 1997 through 2002 can be modeled by , where t represents the year.During which year were the sales increasing at the lowest rate? ​

A) ​Sales are increasing at the lowest rate in the year 2002.
B) ​Sales are increasing at the lowest rate in the year 1997.
C) ​Sales are increasing at the lowest rate in the year 1998.
D) ​Sales are increasing at the lowest rate in the year 2000.
E) ​Sales are increasing at the lowest rate in the year 1999.